Cubic Sensor and Instrument Co., Ltd

CubicModel Gasboard-2520 -TDLAS High-Accuracy Methane Sensor

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Cubic Gasboard-2520 is a high-performance methane gas sensor based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology. By detecting the absorption of laser light at specific wavelengths, the sensor enables highly selective and accurate methane measurement. With a high-performance detector and special processing gas chamber, Gasboard-2520 delivers high accuracy of ± 1 ppm + 2% reading with a minimum detection limit of 1ppm and a resolution of 0.1ppm. Due to the laser-based principle, Gasboard-2520 delivers long-term stability and offers strong resistance to cross-interference from background gases, ensuring reliable performance in complex gas environments. It also features fast response to capture minor gas leakage. The optimized temperature compensation algorithm effectively minimizes the influence of ambient temperature variations, allowing the sensor to operate stably under harsh conditions.
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  • TDLAS technology
  • High accuracy ± 1 ppm + 2% reading, high resolution of 0.1ppm, low detection limit of 1ppm
  • Long-term stability
  • High sensitivity, superior anti-cross interference
  • Fast response
  • Low power consumption design
  • Long lifespan over 10 years
  • Optional TTL/RS233/RS485 communication interface
  • Modular structure, easy for integration
  • Model: Gasboard-2520-CH4; Gasboard-2520-CH4-P
  • Target gas: Methane (CH4)
  • Working principle: Tunable Diode Laser Absorption Spectroscopy (TDLAS)
  • Sampling method: Diffusion; Air pump
  • Measurement range: 0~100 ppm
  • Accuracy: ±(1 ppm+2%reading)@0℃~40℃, ±(2ppm+2%reading)@-20℃~0℃ &40℃~60℃
  • Resolution: 0.1 ppm
  • Response time: <30s
  • Data output frequency: 1 Hz
  • Detection limit: 1 ppm
  • Working temperature: -20~60℃
  • Working humidity: 0~98%RH (non-condensing)
  • Working voltage: 12V±10%
  • Average working current: ≤300mA
  • Output: UART TTL3.3V (RS485/RS232 optional)
  • Storage condition: -40~+85℃;0~98%RH (non-condensing)
  • Dimension: 278mm*70mm*70mm (L*W*H); 278mm*90mm*70mm (L*W*H)